<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="js/vue.js"></script>
</head>
<body>
    <div id="app">
        <p>Original message: "{{ message }}"</p>
        <p>Computed reversed message: "{{ reversedMessage }}"</p>
    </div>

    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                message: 'Hello',
            },
            computed: {
                reversedMessage: function() {
                    return this.message.split('').reverse().join('')
                }
            },
        })
        
    </script>
</body>
</html>